Transcript for Police Deputy Who Brought Down Denver Carjacking Suspect Speaks Out

Now to that wild crime spree in Colorado, the armed man terrorizing a city carjacking several vehicles plowing one of them through a closed garage door. The hero cop who helped take him down is speaking out this morning. ABC's Clayton Sandell has his story. Reporter: This morning the deputy who brought a terrifying crime spree to an end -- Got him down on the ground. Reporter: -- Is speaking out. It's a momentary thought that I'm outgunned, and I need to engage him. Reporter: Deputy Fred Haggett racing to the scene on his motorcycle, gun already aimed at heavily armed suspect Christopher Sullivan. He was trying to get into another vehicle, hijack a vehicle there on the highway. I couldn't let that happen. Reporter: Police say Sullivan and a teenage girl had led them on a nearly two-hour car and foot chase west of Denver Wednesday. Three stolen car, two holmbergrys, six crime scenes. We do have shots fired. Reporter: The female gives up but Sullivan keeps going, even smashing through this garage door in a stolen SUV. Moments later, he's face-to-face with deputy Haggett. Reporter: He's holding his hands up in the air saying don't shoot me but then he's not following the orders to get down on the ground so I holstered my weapon and went after him. Reporter: He takes him down as a TV news chopper captures it all. I've seen it three types since. Reporter: The 22-year veteran insists he is not a hero but a lot of thankful drivers might just disagree. There are half a dozen agencies up there. There's countless law enforcement officers trying to corral these people who are a great threat to the community. I ended up being the guy on the spot. Reporter: For "Good morning America," Clayton Sandell, ABC news, Denver. So humble in his remarks right there. But every time you see that video, even he said he's seen it a futiles. Indeed.

This transcript has been automatically generated and may not be 100% accurate.

Bizarre Carjacking Spree Caught on Camera

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